Portable light source



FIG. 1 is a perspective view of the portable light source according to the present invention;

FIG. 2 is a top plan view of the portable light source;

FIG. 3 is a right side elevational view of the portable light source;

FIG. 4 is a left side elevational view of the portable light source;

FIG. 5 is a bottom plan view of the portable light source;

FIG. 6 is a right end view of the portable light source; and,

FIG. 7 is a left end view of the portable light source.

The broken lines in the Drawings represent portions of the portable light source and form no part of the claimed design. 

The ornamental design for a portable light source, as shown and described. 